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Abstract:

An operation input device includes: an operation body having a handle
portion, and tilting when the user tilts the operation axis line of the
handle portion; a tip end portion disposed at an end of the operation
body in an operation axis line direction, and pushed in a direction to
move apart from the handle portion along the operation axis line
direction; an abutment portion having an abutment surface, the tip end
portion moving and abutting on the abutment surface during a tilting
operation of the operation body; and multiple first protrusion portions.
During the tilting operation of the operation body, the tip end portion
abuts on the abutment surface and moves along a movement path. The first
protrusion portion is disposed on a side of the movement path so as to
guide the tip end portion in the predetermined tilting direction.

Claims:

1. An operation input device comprising: an operation body having a
handle portion, the handle portion being configured to be held by a user
and having a virtual operation axis line, and the operation body being
configured to tilt together with the handle portion around a
predetermined rotation center point on the operation axis line in a case
where the user holds the handle portion and tilts the operation axis line
of the handle portion; a tip end portion disposed at an end of the
operation body in a direction of the operation axis line, the tip end
portion being pushed in a direction to move apart from the handle portion
along the direction of the operation axis line; an abutment portion
having an abutment surface, the tip end portion moving and abutting on
the abutment surface during a tilting operation of the operation body;
and a plurality of first protrusion portions, wherein, when the tip end
portion moves in a predetermined tilting direction during the tilting
operation of the operation body, the tip end portion abuts on the
abutment surface and moves along a movement path, and wherein the first
protrusion portion is disposed on a side of the movement path so that the
first protrusion portion guides the tip end portion in the predetermined
tilting direction.

2. The operation input device according to claim 1, further comprising: a
second protrusion portion, wherein the second protrusion portion
surrounds a position of the abutment surface, on which the tip end
portion abuts, under a condition that the tilting operation of the
operation body is not performed, and wherein the second protrusion
portion is located on a boundary between the position of the abutment
surface, on which the tip end portion abuts under a condition that the
tilting operation of the operation body is not performed and a position
of the abutment surface, on which the tip end portion abuts under a
condition that the tilting operation of the operation body is performed.

3. The operation input device according to claim 1, wherein tilting
directions of the operation body are set equally in a circumferential
direction of the operation axis line around the operation axis line under
a condition that the tilting operation of the operation body is not
performed, and wherein the plurality of first protrusion portions are
disposed in a radial manner from a center of the abutment surface.

4. The operation input device according to claim 3, wherein the movement
path includes a plurality of routes, wherein the plurality of routes are
disposed to be adjacent to each other, wherein the first protrusion
portion is disposed between two adjacent routes, and wherein the first
protrusion portion provides a single convex portion, which is available
for two routes.

5. The operation input device according to claim 1, wherein the first
protrusion portion is set to have a height, which is low enough for the
tip end portion to shift from one of the adjacent routes to the other.

Description:

CROSS REFERENCE TO RELATED APPLICATION

[0001] This application is based on Japanese Patent Application No.
2011-65622 filed on Mar. 24, 2011, the disclosure of which is
incorporated herein by reference.

TECHNICAL FIELD

[0002] The present disclosure relates to relates to an operation input
device.

BACKGROUND

[0003] Operation input devices of many different configurations are used
in various fields, and there is an operation input device configured to
accept multiple operations, such as depressing and rotation, by a single
device. One example is disclosed in Patent Document 1 specified below.
This document discloses an other-direction operation switch that
allegedly eliminates a need for visual confirmation during an operation
and causes no erroneous operation. [0004] Patent Document 1:
JP-A-2007-128862

[0005] There is an operation input device that accepts an oscillation
(tilting) operation in multiple directions in the related art. An
operation input device of this type in the related art provides an
ambiguous operational feeling in response to a tilting operation. Hence,
it is not easy for a user to understand in which direction among
predetermined multiple, tilting directions he is oscillating the
operation input device.

[0006] Accordingly, there is a possibility of an erroneous operation that
the user accidentally oscillates the operation input device in an
unintended direction. Hence, there is a need for an operation input
device that enables the user to obtain a distinct operational feeling as
to an oscillation direction and lowers a possibility that the user inputs
a wrong oscillation direction.

SUMMARY

[0007] It is an object of the present disclosure to provide an operation
input device that enables a user to obtain a distinct operational feeling
as to an oscillation direction and lowers a possibility that the user
inputs a wrong oscillation direction.

[0008] According to an aspect of the present disclosure, an operation
input device includes: an operation body having a handle portion, the
handle portion being configured to be held by a user and having a virtual
operation axis line, and the operation body being configured to tilt
together with the handle portion around a predetermined rotation center
point on the operation axis line in a case where the user holds the
handle portion and tilts the operation axis line of the handle portion; a
tip end portion disposed at an end of the operation body in a direction
of the operation axis line, the tip end portion being pushed in a
direction to move apart from the handle portion along the direction of
the operation axis line; an abutment portion having an abutment surface,
the tip end portion moving and abutting on the abutment surface during a
tilting operation of the operation body; and a plurality of first
protrusion portions. When the tip end portion moves in a predetermined
tilting direction during the tilting operation of the operation body, the
tip end portion abuts on the abutment surface and moves along a movement
path. The first protrusion portion is disposed on a side of the movement
path so that the first protrusion portion guides the tip end portion in
the predetermined tilting direction.

[0009] The operation input device above is configured in such a manner
that the tip end portion of the operation body that tilts in association
with a tilting operation by the user is pushed and abuts on the abutment
surface and the protrusion portion is provided lateral to the movement
path corresponding to a predetermined tilting direction on the abutment
surface. Accordingly, the tilting direction of the operation body is
guided to the predetermined tilting direction by the protrusion portion.
Hence, with a configuration as simple as forming the protrusion portion
on the abutment surface, it becomes possible to achieve an operation
input device that provides a distinct operation feeling in response to a
tilting operation and lowers a possibility of an input of a wrong tilting
operation.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and other objects, features and advantages of the present
disclosure will become more apparent from the following detailed
description made with reference to the accompanying drawings. In the
drawings:

[0011] FIG. 1 is a perspective view of an operation input device according
to one embodiment;

[0012] FIG. 2A is a plan view and FIG. 2B is a front view of the operation
input device;

[0013] FIG. 3 is a perspective view of the operation input device with a
cross section;

[0014] FIG. 4 is a cross section taken along the line IV-IV of the
operation input device of FIG. 2A;

[0015] FIG. 5A is a plan view of a knob and FIG. 5B is a cross section
taken along the line VB-VB of the knob of FIG. 5A;

[0016] FIG. 6A is a plan view of a rotation shaft, FIG. 6B is a cross
section taken along the line VB-VB of the rotation shaft of FIG. 6A, and
FIG. 6C is a bottom view of the rotation shaft;

[0017] FIG. 7A is a plan view of a center shaft and FIG. 7B is a cross
section taken along the line VIIB-VIIB of the center shaft of FIG. 7A;

[0018] FIG. 8A is a plan view of a swing shaft and FIG. 8B is a cross
section taken along the line VIIIB-VIIIB of the swing shaft of FIG. 8A;

[0019] FIG. 9A is a plan view of a slider and FIG. 9B is a cross section
taken along the line IXB-IXB of the slider of FIG. 9A;

[0020] FIG. 10A is a plan view of a press rubber and FIG. 10B is a cross
section taken along the line XB-XB of the press rubber of FIG. 10A;

[0021] FIG. 11A is a plan view of a holder and FIG. 10B is a cross section
taken along the line XIB-XIB of the holder of FIG. 10A;

[0022] FIG. 12A is a plan view of a substrate and FIG. 12B is a cross
section taken along the line XIIB-XIIB of the substrate of FIG. 12A;

[0023] FIG. 13A is a plan view of a click plate and FIG. 13B is a cross
section taken along the line XIIIB-XIIIB of the click plate of FIG. 13A;

[0024] FIG. 14A is a plan view of a cover and FIG. 14B is a cross section
taken along the line XIVB-XIVB of the cover of FIG. 14A;

[0025] FIG. 15A is a plan view of a case and FIG. 15B is a cross section
taken along the line XVB-XVB of the case of FIG. 15A;

[0026] FIG. 16A is a plan view of an upper housing and FIG. 16B is a cross
section taken along the line XVIB-XVIB of the upper housing of FIG. 16A;

[0027]FIG. 17 is a view showing the operation input device during a
tilting operation;

[0028]FIG. 18 is a view showing a fitting state during the tilting
operation when viewed from sideways;

[0029] FIG. 19 is a view showing the fitting state during the tilting
operation when viewed from below;

[0030] FIG. 20 is a view showing a manner of rotation during the tilting
operation;

[0031] FIG. 21A is a perspective view of the click plate, FIG. 21B is a
bottom view of the click plate; FIG. 21C is a cross section taken along
the line XXIC-XXIC of the click plate of FIG. 21B, and FIG. 21D is a
cross section taken along the line XXID-XXID of the click plate of FIG.
21B;

[0032] FIG. 22 is a view showing a movable range during the tilting
operation;

[0033] FIG. 23 is a view showing an example of a desired direction and an
actual direction during the tilting operation;

[0037] FIG. 27 is a plan view showing a layout example of the photo
interrupters;

[0038]FIG. 28 is a view depicting a determination method of the tilting
operation and the shaft pushing operation;

[0039] FIG. 29 is a view showing an installment example of the operation
input device in a vehicle interior; and

[0040] FIG. 30 is a view showing an example when the click plates are
changed.

DETAILED DESCRIPTION

[0041] FIG. 1 is a perspective view of an operation input device 1
(hereinafter, referred to as the device) according to an embodiment of
the present disclosure. FIG. 2A is a plan view and FIG. 2B is a side view
of the device 1. FIG. 3 is a perspective view showing an interior made
visible on a cross section taken along the line IV-IV. FIG. 4 is a cross
section taken along the line IV-IV.

[0042] The device 1 includes a knob 2, a rotation shaft 3, a center shaft
4, a swing shaft 5, a slider 6, a press rubber 7, a holder 8, a substrate
9, a click plate 10, a cover 11, a case 12, an upper housing 13, an
oscillation plunger 40, an oscillation spring 41, a rotation plunger 50,
and a rotation plunger 51. FIG. 5A through FIG. 16B are views showing
these components individually. In FIG. 5A through FIG. 16B, cross
sections taken along the lines VB-VB through XVIB-XVIB are the same as
the cross section taken along the line IV-IV shown in FIG. 4. With regard
to materials of the device 1, for example, the press rubber 7 can be made
of rubber (gum), the oscillation plunger 40 of brass, the oscillation
spring 41 and the rotation spring 51 of stainless or a steel wire, and
the rest of resin.

[0044] As is shown in FIG. 1, the operation input device 1 is a device
that enables a user holding the knob 2 to perform operation inputs
including shaft pushing, rotation, and 8-direction tilting (oscillation)
operations. Referring to FIG. 4, a virtual straight line passing through
the knob 2 at a center in a left-right direction as shown in the drawing
is given as an operation axis line L. Assume that the operation axis line
L is a virtual line fixed to the knob and moves in association with
motion of the knob 2.

[0045] In a shaft pushing operation, the user presses the knob 2 downward
in a direction parallel to the operation axis line L. In a rotation
operation, the user turns the knob 2 about the operation axis line L as
the center axis. In a tilting (oscillation) operation, the user tilts the
knob 2 in eight directions. As is shown in FIG. 17 (described below), a
virtual axis line in a direction perpendicular to a substrate surface of
the substrate 9 is given as a vertical axis line V. Assume that the
operation axis line L agrees with the vertical axis line V when a tilting
operation is not performed on the knob 2. A tilting center point P is
present on the vertical axis line V and the operation axis line L. The
operation axis line L tilts with respect to the vertical axis line V
about the tilting center point P as a tilting operation is performed on
the knob 2. These operations will be described in detail below.

[0046] As are shown in FIG. 2A and FIG. 2B, the device 1 is of a shape in
which the knob 2 protrudes upward as shown in the drawing from the case
12. A lower portion of the device 1 is covered with the cover 11. The
device 1 is installed, for example, in an interior of an automobile and
fixed to a place within arm's reach of the driver by tightening screws
inserted into hole portions (descried below) provided to the case 12 in
such a manner that the cover 11 is not exposed to the interior side.

[0047] The knob 2, the rotation shaft 3, the center shaft 4, the swing
shaft 5, the slider 6, the press rubber 7, the holder 8, the substrate 9,
the click plate 10, the cover 11, the case 12, the upper housing 13, and
the oscillation plunger 40 are, with a partial exception, basically of a
circular shape in cross section perpendicular to a direction of the
vertical axis line V.

[0048] FIG. 5A and FIG. 5B are a plane view and a cross section taken
along the line VB-VB, respectively, of the knob 2. The knob 2 is of a
shape in which a tube portion 21 that encloses the rotation shaft 3 from
above as shown in the drawing is provided to extend from a top surface 20
in an upper part as shown in the drawing. The knob 2 and the rotation
shaft 3 are fixed to each other as the rotation shaft 3 is inserted into
an inner surface 22 of the tube portion 21.

[0049] FIG. 6A through FIG. 6C are a plan view, a cross section taken
along the line VIB-VIB, and a bottom view, respectively, of the rotation
shaft 3. The rotation shaft 3 includes two cylinder portions 31 and 32
provided to extend downward as shown in the drawing from a circular plate
portion 30 of a disc shape. The inner cylinder portion 31 encloses the
center shaft 4 from above as shown in the drawing and from radially
outward. The inner cylinder portion 31 is enclosed by the swing shaft 5
from radially outward. The outer cylinder portion 32 encloses the swing
shaft 5 from above as shown in the drawing and from radially outward.
Hence, the swing shaft 5 is pinched by the inner cylinder portion 31 and
the outer cylinder portion 32 from radially inward and outward,
respectively.

[0050] The outer cylinder portion 32 of the rotation shaft 3 has a
ball-like portion 33 of a spherical shape about the tilting center point
P in a portion on a lower side as shown in the drawing. Upward motion of
the rotation shaft 3 is stopped as the surface of the ball-like potion 33
abuts on the upper housing 13. A flange portion 34 is provided to extend
radially outward from the ball-like portion 33 at a lower end as shown in
the drawing.

[0051] In a region between the inner cylinder portion 31 and the outer
cylinder portion 32 of the circular plate portion 30 on a surface on a
lower side as shown in the drawing, a plurality of convex portions 35
protruding downward as shown in the drawing are formed all along a
circumferential direction. As are shown in FIG. 6B and FIG. 6C, the
convex portions 35 are formed in such a manner that angle protrusions
each having a radially extending ridge are aligned regularly along the
circumferential direction. Accordingly, a turning operation of the knob 2
is a turning operation by a predetermined turning angle at a time
(described below).

[0052] A plurality of ribs 36 (convex portions) protruding upward as shown
in the drawing are formed at regular intervals along the circumferential
direction in a radially inner portion on the top surface of the flange
portion 34. More specifically, the ribs 36 of a trapezoidal shape
(rectangular shape) in cross section (cross section orthogonal to the
radial direction) are formed on the top surface of the flange 34 so as to
extend radially outward.

[0053] FIG. 7A and FIG. 7B show a plan view and a cross section taken
along the line respectively, of the center shaft 4. The center shaft 4
includes a ball-like portion 43 of a semi-spherical shape on a lower side
of a shaft portion 42 and further a tube portion 44 on a lower side of
the ball-like portion 43. Bar portions 46 of a bar shape are provided to
the ball-like portion 43 in the left-right direction as shown in the
drawing. Protrusion portions 47 are formed in the vicinity of the tip
ends of the respective bar portions 46.

[0054] The shaft portion 42 is inserted into the inner cylinder portion 31
of the rotation shaft 3. The ball-like portion 43 is supported by the
slider 6 from below. The tip end of each bar portion 46 and the
protrusion portion 47 are inserted into a hole portion 58 (described
below) provided to the swing shaft 5 by passing through a through-hole
portion 82 (described below) of the holder 8 and fixed therein.

[0055] The oscillation plunger 40 and the oscillation spring 41 are
inserted into an inner surface 45 of the tube portion 44. The oscillation
plunger 40 is pushed downward by an elastic restoring force of the
oscillation spring 41. The oscillation plunger 40 is pressed against a
concave surface (described below) formed in the click plate 10.

[0056] The oscillation plunger 40 includes a large diameter portion 40a of
a cylindrical pillar shape having a large diameter and a small diameter
portion 40c of a cylindrical pillar shape having a small diameter that
are connected to each other with a taper portion 40b. A tip end of the
small diameter portion 40c forms a tip end surface 40d of a curved
surface shape. The oscillation plunger 40 together with the oscillation
spring 41 is inserted into the tube portion 44 of the center shaft 4. The
oscillation plunger 40 is pushed by elasticity of the oscillation spring
41 and the tip end surface 40d abuts on a concave surface 103 of the
click plate 10.

[0057] FIG. 8A and FIG. 8B show a plan view and a cross section taken
along the line VIIIB-VIIIB, respectively, of the swing shaft 5. The swing
shaft 5 includes a ball-like portion 55 of a spherical shape in a lower
portion of a cylinder portion 52. Protrusion portions 56 are provided to
protrude radially outward from a lower end of the ball-like portion 55 at
regular intervals in the circumferential direction.

[0058] As has been described above, the cylinder portion 52 is inserted
into the outer cylinder portion 32 of the rotation shaft 3. The inner
cylinder portion 31 of the rotation shaft 3 is inserted into an inner
surface 53 of the cylinder portion 52. A plurality of (for example, two)
hole portions 54 extending in an axial direction and spaced apart in the
circumferential direction are formed in an upper end face of the cylinder
portion 52. The rotation plunger 50 and the rotation spring 51 are
inserted into each hole portion 54.

[0059] An outer surface of the ball-like portion 55 of the swing shaft 5
can be spaced apart, for example, by about 1 mm from the inner surface of
the ball-like portion 33 of the rotation shaft 3. The outer surface of
the ball-like portion 55 of the swing shaft 5 is formed in a spherical
shape about the tilting center point P. The two hole portions 58 are
formed in the inner surface of the ball-like portion 55 to house and fix
therein the tip ends of the bar portions 46 and the protrusion portions
47 both of the center shaft 4. The rotation plunger 50 is of a shape
provided with a tip end surface 50b of a curved surface shape in a
circular pillar portion 50a. The rotation plunger 50 together with the
rotation spring 51 is housed in each hole portion 54 of the swing shaft 5
and pushed upward as shown in the drawing, so that the tip end surface
50b abuts on the lower surface of the circular plate portion 30 of the
rotation shaft 3.

[0060] FIG. 9A and FIG. 9B show a plan view and a cross section taken
along the line IXB-IXB, respectively, of the slider 6. The slider 6 is of
a cylindrical shape provided with a through-hole portion 61 in a
top-bottom direction. A portion of the through-hole portion 61 in the
vicinity of an upper end forms a ball-like portion 60 hollowed out in a
spherical shape. A portion of the through-hole portion 61 in the vicinity
of a lower end forms a trapezoidal portion 62 hollowed out in a
trapezoidal shape. A diameter of the through-hole portion 61 increases on
the lower side as shown in the drawing so as not to interfere with
tilting motion of the center shaft 4.

[0061] The ball-like portion 60 supports the ball-like portion 43 of the
center shaft 4 from below. The tube portion 44 of the center shaft 4 is
inserted into the through-hole portion 61. The trapezoidal portion 62 is
placed on an upper end face 71 (described below) of the press rubber 7. A
shape in which to house the bar portions 46 or the like of the shaft
center 4 with a space in between is formed in the ball-like portion 60 on
an upper side as shown in the drawing.

[0062] FIG. 10A and FIG. 10B show a plan view and a cross section taken
along the line XB-XB, respectively, of the press rubber 7. The press
rubber 7 includes a flange potion 73 formed radially outward from a lower
end of a cylinder portion 70. A radially inner portion of the flange
portion 73 forms a slope portion 72 formed to tilt with respect to the
cylinder portion 70. A horizontal surface portion of the trapezoidal
portion 62 of the slider 6 is placed on the top surface 71 of the
cylinder portion 70 of the press rubber 7. The entire lower end face of
the flange portion 73 of the press rubber 7 abuts on the substrate 9 and
the radially outward tip end of the flange 73 is inserted into a step
portion 84 of the holder 8. A diameter of the inner end face of the
cylinder portion 70 increases on the lower side as shown in the drawing
so as not to interfere with tilting motion of the center shaft 4.

[0063] FIG. 11A and FIG. 11B show a plan view and a cross section taken
along the line XIB-XIB, respectively, of the holder 8. The holder 8 is of
a shape in which a flange portion 81 is provided to extend radially
outward from a lower end of a tube portion 80 of a tubular shape. A
diameter of the tube portion 80 can be smaller on an upper side. The
lengthwise long through-hole portions 82 are provided to the tube 80 in
portions on the left and light as shown in the drawing in a one-to-one
correspondence. The bar portion 46 of the center shaft 4 is inserted into
each through-hole portion 82. The flange portion 81 is provided with hole
portions 83 at intervals in a circumferential direction. Protrusion
portions 112 (described below) of the case 11 are inserted into the
respective hole portions 83. The holder 8 includes the step portion 84 on
a lower side as shown in the drawing. The radially outward tip end of the
flange portion 73 of the press rubber 7 is inserted into the step potion
84.

[0064] FIG. 12A and FIG. 12B show a plan view and a cross section taken
along the line XIIB-XIIB, respectively, of the substrate 9. The substrate
9 is of a disc shape and a lower surface forms a substrate surface 90 on
which various elements are disposed. The substrate 9 is provided with a
hole portion 91 at a center and hole portions 92 at positions on top of
which the respective hole portions 83 of the holder 8 are to be located.
The center shaft 4 is inserted into the hole portion 91. The protrusion
portions 112 (described below) of the case 11 are inserted into the
respective hole portions 92.

[0065] FIG. 13A and FIG. 13B show a plan view and a cross section taken
along the line XIIIB-XIIIB, respectively, of the click plate 10. The
click plate 10 is provided with a concave portion opening upward and
placed on a top surface of the case 11 at a center thereof. As the tip
end (lower tip end) of the oscillation plunger 40 abuts on the inside of
the concave portion, the click plate 10 plays a role of, for example,
allowing the center shaft 4 to stay at the center position in a stable
manner.

[0066] The concave portion of the click plate 10 is chiefly of a
triple-layer structure in a circular shape in cross section in a
direction perpendicular to the vertical axis line V. More specifically,
the concave portion of the click plate 10 is formed of, from top to
bottom, a large diameter cylinder portion 100 of a cylindrical shape
having a large diameter, a small diameter cylinder portion 101 of a
cylindrical shape having a small diameter, and the concave surface 103
having a surface chiefly of a curved surface shape. The large diameter
cylinder portion 100 is formed to prevent the click plate 10 from
interfering with tilting motion of the center shaft 4 while the user is
performing a tilting operation.

[0067] The tube portion 44 of the center shaft 4 is inserted into the
small cylinder portion 101 with an end face 102 in the horizontal
direction at the top while the user is performing a shaft pushing
operation. The concave surface 103 is a surface across which the tip end
(lower end) of the oscillation plunger 40 moves while abutting thereon
during a tilting operation by the user.

[0068] A shape to guide the tip end of the oscillation plunger 40 is
formed in the concave surface 103 (described below). A fixing method of
the click plate 10 can be adopted arbitrarily from various methods. For
example, the click plate 10 may be fastened to the substrate 9 by
tightening screws inserted through unillustrated hole portions.

[0069] FIG. 14A and FIG. 14B show a plan view and a cross section taken
along the line XIVB-XIVB, respectively, of the cover 11. The cover 11 is
a member that covers the device 1 from behind (a side invisible to the
user when installed to the vehicle). The cover 11 includes a cylinder
portion 111 formed from a radial end portion of a bottom surface 110. A
plurality of the protrusion portions 112 are formed on the bottom surface
110 so as to protrude upward. The protrusion portions 112 are disposed by
penetrating through the respective hole portions 84 of the holder 8 and
the respective hole portions 92 of the substrate 9. The lower end face of
the flange portion 34 of the rotation shaft 3 abuts on abutment surfaces
113 while the user is performing a shaft pushing operation, so that
overweighting on the upper end faces of the protrusion portions 112 is
suppressed.

[0070] FIG. 15A and FIG. 15B show a plan view and a cross section taken
along the line XVB-XVB, respectively, of the case 12. The case 12 is a
member that covers a body portion (portion other than the knob 2) of the
device 1. The case 12 includes a cylinder portion 120 of a cylindrical
shape that covers the device interior from radially outward and a
circular plate portion 121 of chiefly a disc shape that covers the device
interior from above in the axial direction. A radially inner portion of
the circular plate portion 121 forms a slope portion 122 tilting
downward. Protrusion portions 123 protruding in a left-right direction as
shown in the drawing are formed at a lower end of the cylinder portion
120. The case 12 (and hence the device 1) can be fixed to the interior of
the vehicle, for example, by tightening screws inserted into hole
portions 124 provided to the respective protrusion portions 123.

[0071] FIG. 16A and FIG. 16B show a plan view and a cross section taken
along the line XIB-XVIB, respectively, of the upper housing 13. The upper
housing 13 is of a shape in which a fold-back portion 131 is formed by
folding an upper end portion in the axil direction of a cylinder portion
130 of a cylindrical shape radially inward. In a case where the user
performs a tilting operation, a part of the flange portion 34 of the
rotation shaft 3 that rises by tilting motion abuts on the lower end face
of the fold-back portion 131 and the tilting motion is stopped.

[0072] Groove portions 132 are formed in the lower end face of the
fold-back portion 131. Individual grooves of the groove portions 132 are
formed to extend radially outward from the radially inner end portion of
the fold-back portion 131 in such a manner that these grooves are aligned
all along the circumference of the fold-back portion 131. The groove
portions 132 on the lower end face of the fold-back portion 131 fit to
the ribs 36 formed in the flange portion 34 of the tilting rotation shaft
3.

[0073] This fitting suppresses rotations of the rotation shaft 3 while the
rotation shaft 3 is brought into a tilting state by a tilting operation
by the user. Hence, unintended rotation motion is suppressed while the
user is performing a tilting operation. The user thus becomes able to
perform the tilting operation in a reliable manner.

[0074] A tilting (oscillation) operation, a shaft pushing operation, and a
rotation (turning) operation of the device 1 configured as above will now
be described more in detail. It should be appreciated that the holder 8,
the substrate 9, the click plate 10, the cover 11, the case 12, and the
upper housing 13 are in a fixed state (for example, in the interior of
the vehicle) and do not undergo any motion in response to any of the
operations specified above.

[0075] A tilting (oscillation) operation will be described first. FIG. 17
shows a state where a tilting operation to the right as shown in the
drawing is performed on the device 1 shown in FIG. 4. When the user
performs a tilting (oscillation) operation, that is, an operation to tilt
the operation axis line L by holding the knob 2, as is shown in FIG. 17,
the knob 2, the rotation shaft 3, the center shaft 4, and the swing shaft
5 tilt in a direction in which the tilting operation was performed. As
has been described, the inner end face of the through-hole portion 61 of
the slider 6 and the inner end face of the cylinder portion 70 of the
press rubber 7 are tilted with respect to the vertical axis line V so as
not to interfere with tilting motion of the center shaft 4. A tilting
operation is rotational motion about the tilting center point P. During
tilting motion, the ball-like portion 43 of the center shaft 4 slides on
the ball-like portion 60 of the slider 6 whereas the ball-like portion 55
of the swing shaft 5 slides on the inner end face of the fold-back
portion 131 of the upper housing 13.

[0076] By a tilting operation, the tip end (lower end) of the oscillation
plunger 40 being pushed downward as shown in the drawing by the
oscillation spring 41 glides within the concave surface 103 of the click
plate 10. A guide portion 104 that guides the tip end of the oscillation
plunger 40 in a predetermined tilting direction during a tilting
operation is formed in the concave surface 103. This configuration will
be descried in detail below.

[0077] A tilting operation is stopped as a portion of the flange portion
34 of the rotation shaft 3 on a side opposite to the direction of the
tilting operation (a side rising by the tilting motion) abuts on the
lower end face of the fold-back portion 131. Upon this abutment, the ribs
36 formed in the flange portion 34 of the rotation shaft 3 and the groove
portions 132 formed in the upper housing 13 are fit to each other.
Consequently, rotational motion during the tilting operation is
suppressed.

[0078] A shaft pushing operation will now be described. FIG. 24A and FIG.
24B show a state where a shaft pushing operation is performed on the
device 1 of FIG. 4. When the user performs a shaft pushing operation,
that is, an operation to push the knob 2 downward as shown in the
drawing, as are shown in FIG. 24A and FIG. 24B, the knob 2, the rotation
shaft 3, the center shaft 4, the swing shaft 5, and the slider 6 move
downward in a parallel direction.

[0079] In this instance, the press rubber 7 made of rubber undergoes
deformation due to elasticity of rubber. As an amount of shaft pushing (a
distance over which the center shaft 4 moves downward as shown in the
drawing in a parallel direction) increases from zero, the press rubber 7
gradually undergoes deformation. When an amount of shaft pushing exceeds
a certain amount, as are shown in FIG. 24A and FIG. 24B, the slope
portion 72 of the press rubber 7 rapidly undergoes considerable
deformation. This considerable deformation makes the user have a clicking
feeing.

[0080] When the tube portion 44 of the center shaft 4 moves downward in a
parallel direction by the shaft pushing operation, as are shown in FIG.
25A and FIG. 25B, the tube portion 44 is inserted into the small diameter
tube portion 101 of the click plate 10. A size (diameter) of the tube
portion 44 is set slightly smaller than a size (diameter) of the small
diameter tube portion 101. Accordingly, once the tube portion 44 is
inserted into the small diameter cylinder portion 101, the tube portion
44 is no longer allowed to tilt. Owing to this configuration, undesirable
tilting motion is suppressed while the user is performing a shaft pushing
operation and the user becomes able to perform the shaft pushing
operation in a reliable manner.

[0081] A rotation (turning) operation will now be described. When the user
performs a turning operation, that is, an operation to rotate the knob 2
about the operation axis line L, the knob 2 and the rotation shaft 3 are
turned. Even when the bar portions 46 of the center shaft 4 are forced to
rotate, the bar potions 46 are stopped by the holder 8 that is disposed
fixedly. Hence, the center shaft 4 is not turned. Accordingly, the swing
shaft 5 to which the tip ends of the bar portions 46 of the center shaft
4 are fixed is not turned, either. Likewise, the slider 6 and the press
rubber 7 are not turned.

[0082] As has been described, the convex portions 35 are formed, as are
shown in FIG. 6A through FIG. 6C, on the lower surface of the rotation
shaft 3. When the user performs a turning operation on the knob 2, the
turning plungers 50 undergo motion in a top-bottom direction. Because the
turning plungers 50 are pushed upward by the turning springs 51, the
turning plungers 50 are pressed downward more forcefully where the convex
portions 35 are present than where the convex portions 35 are absent.

[0083] Owing to this configuration, a turning angle of the knob 2 by a
turning operation on the knob 2 is stabilized at a position between the
convex portions 35. FIG. 6C shows stabilized positions 35a each between
the convex portions 35. Because the convex portions 35 are formed at
regular intervals in a circumferential direction, the stabilized
positions 35a are also disposed at regular intervals in the
circumferential direction. Turning of the knob 2 is stabilized at the
stabilized positions 35a. The knob 2 is therefore turned by an angle
between the adjacent stabilized positions 35a at a time.

[0084] The device 1 will be described more in detail in the following.
FIG. 18 and FIG. 19 show a manner in which the rib 36 of the rotation
shaft 3 and the groove portions 132 of the upper housing 13 are fit to
each other. As has been described, the flange portion 34 of the rotation
shaft 3 is provided with the ribs 36 at regular intervals in the
circumference direction. Likewise, the upper housing 13 is provided with
the groove portions 132 at regular intervals in the circumferential
direction.

[0085] In an example of FIG. 16A and FIG. 16B, eight ribs 36 are formed at
regular intervals in the circumferential direction and 24 groove portions
132 are formed at regular intervals in the circumferential direction. The
number of the groove portions 132 is equal to the number of the
stabilized positions 35a in one turn. The ribs 36 and the groove portions
132 are formed at positions at which the former and the latter fit to
each other when the knob 2 and the rotation shaft 3 are tilted while
turning motion thereof is stabilized at the stabilized position 35a. In
the operation input device 1, the number of oscillation directions (8) is
a divisor of the number of rotational clicks in one turn (24). When the
number of oscillation directions and the number of one-turn rotational
clicks do not satisfy this condition, the ribs 36 and the groove portions
132 do not fit to each other during a tilting operation. In the operation
input device 1, the number of oscillation directions and the number of
one-turn rotational clicks can be changed from 8 and 24, respectively.
However, the condition that the former be a divisor of the latter has to
be satisfied in this case, too.

[0086] As the ribs 36 and the groove portions 132 fit to each other during
a tilting operation, rotation motion of the knob 2 and the rotation shaft
3 in a tilting state is inhibited or suppressed. In an operation input
device in the related art shown in FIG. 20, rotation motion undesirable
for the user occurs during tilting motion in some cases. In particular,
depending on a manner in which a force is applied, the knob rotates or
collapses after the knob is oscillated. In contrast, in the operation
input device 1 of this embodiment, because rotations during tilting
motion are suppressed, operation performance during tilting motion is
stabilized and an erroneous operation is suppressed.

[0087] FIG. 21A through FIG. 21D show the guide portion 104 formed in the
concave surface 103 of the click plate 10. As is shown in FIG. 23, with
the operation input device in the related art, when the user performs a
tilting (oscillation) operation, an operational feeling is ambiguous and
there is a possibility of an erroneous operation because the knob is not
actually tilted in an intended tilting direction. In other words, in
response to an input of an operation direction, a direction unintended by
the user is inputted in some cases. Herein, the guide portion 104 is a
region that lowers a possibility of an erroneous operation by providing a
distinct operational feeling for a tilting operation owing to a shape of
a portion of the concave surface 103 of the click plate 10 on which the
oscillation plunger 40 pushed by the oscillation spring 41 abuts.

[0088] The guide portion 104 is a convex portion formed on the concave
surface 103 in such a manner that the tip end (lower end) of the
oscillation plunger 40 abuts thereon and is guided appropriately in a
predetermined tilting direction during a tilting operation. In an example
of FIG. 21A through FIG. 21D, there are eight predetermined tilting
directions set by dividing the entire circumference about the vertical
axis line V by 8.

[0089] The guide portion 104 includes a ring-like convex portion 106
surrounding, in a circumferential direction, an outer rim of a position
at which the tip end of the oscillation plunger 40 abuts in a non-tilting
state (that is, a state where the operation axis line L agrees with the
vertical axis line V as in FIG. 4) and linear convex portions 105 formed
radially outward from the ring-like convex portion 106 in a radial
fashion in eight boundaries of the respective eight predetermined tilting
directions.

[0090] As is shown in the cross section taken along the line XXIC-XXIC of
FIG. 21C, the ring-like convex portion 106 can be, for example, of a
shape protruding from the click plate 10 to have a ring-like ridge and a
region surrounded by the ring-like convex portion 106 can form a smooth
concave portion of a curved surface shape. In a case where the user
performs a tilting operation on the knob 2 in a non-tilting state, the
user has a clicking feeing at hand when the tip end of the oscillation
plunger 40 surmounts the ring-like convex portion 106. With this clicking
feeling, the user can confirm that the knob 2 is brought into a tilting
state.

[0091] Also, as are shown in the cross sections taken along the lines
XXIC-XXIC and XXID-XXID of FIG. 21C and FIG. 21D, respectively, the
linear convex portions 105 can be, for example, of a shape protruding
from the click plate 10 so as to have a linear ridge and a region
sandwiched between the linear convex portions 105 can form a smooth
concave portion of a curved surface shape.

[0092] In a case where the user performs a tilting operation on the knob
2, the eight directions divided by the eight linear convex portions 105
are the appropriate tilting directions. The eight directions D1 through
D8 are shown in FIG. 22. Because the linear convex portions 105 are
formed on the both sides of each of the eight tilting directions D1
through D8, the user can tilt the knob 2 in a desired tilting direction
in a stable manner.

[0093] It should be appreciated, however, that an operation direction
allowed by the tilting operation on the knob 2 by the user is not limited
to the eight directions D1 through D8 defined by the linear convex
portions 105. Herein, let a point Q be an intersection of the operation
axis line L and the top surface 20 of the knob 2, then FIG. 22 shows a
movable range of the point Q by a tilting operation by the user. In
short, the movable range of the point Q is the entire inside of a circle
shown in FIG. 22.

[0094] The outer rim of the movable range shown in FIG. 22 corresponds to
a tilting angle in a state where the tilting motion is stopped as the
tilting rotation shaft 3 abuts on the upper housing 13 (the ribs 36 and
the groove portions 132 fit to each other as described above). When the
user performs a tilting operation on the knob 2, the device 1 allows the
user to move to an adjacent tilting direction (for example, to move from
the direction D1 to the direction D2). For example, the user can perform
a tilting operation in such a manner that the point Q undergoes circular
motion about the vertical axis line L.

[0095] In this instance, when the tip end of the oscillation plunger 40
surmounts the linear convex portion 105, the user has a clicking feeling
at the hand. With this clicking feeling, the user can confirm that the
knob 2 has shifted to the adjacent tilting direction. Hence, in a case
where the user changes the tilting directions, the user can confirm in a
reliable manner that the tilting directions have been actually changed.
Also, in a case where the user has no clicking feeling provided when the
tilting direction shifts to the adjacent direction, the user can confirm
in a reliable manner that he is successfully performing the operation in
the desired tilting direction. Herein, in order to allow the oscillation
plunger 40 to glide on the guide portion 104, an R of the concave shape
of the guide portion is set larger than an R of the tip end surface 40d
of the oscillation plunger 40.

[0096] A shaft pushing operation of the device 1 will now be described.
The device 1 during a shaft pushing operation is shown in FIG. 24A, FIG.
24B, FIG. 25A, and FIG. 25B. FIG. 24A and FIG. 24B are overall views and
FIG. 25A and FIG. 25B are partially enlarged views. As has been
described, the knob 2, the rotation shaft 3, the center shaft 4, the
swing shaft 5, and the slider 6 move downward in a parallel direction by
a shaft pushing operation by the user. In this instance, the press rubber
7 made of rubber undergoes deformation due to elasticity of rubber.

[0097] As an amount of shaft pushing (a distance over which the center
shaft 4 moves downward as shown in the drawing in a parallel direction)
increases from zero, the press rubber 7 gradually undergoes deformation.
When an amount of shaft pushing exceeds a certain amount, as are shown in
FIG. 24A and FIG. 24B, the slope portion 72 of the press rubber 7 rapidly
undergoes considerable deformation (buckling). This considerable
deformation provides the user with a clicking feeing.

[0098] The click plate 10 is provided with the small diameter cylinder
portion 101. As the center shaft 4 is pushed downward, the cylinder
portion 44 of the center shaft 4 is inserted into the small diameter
cylinder portion 101 and fit therein. FIG. 24A shows a state where the
shaft pushing operation is at a halfway stage and FIG. 24B and a right
side of FIG. 25A show a state where the center shaft 1 is fully pushed
(one stroke completed state). The stage of FIG. 24A shows a state where
the center shaft 4 is stroked by 1.5 mm. The slope portion 72 of the
press rubber 7 then buckles and the bottom surface of the cylinder
portion 70 abuts on the substrate 9 in the top surface as shown in the
drawing. FIG. 24B shows a state where the shaft pushing operation is
performed further (for example, the center shaft 4 is stroked by 2 mm).
The press rubber 7 then undergoes further deformation to the extent that
the abutment surfaces 113 of the respective protrusion portions 112 of
the cover 11 abut on the bottom surface of the flange portion 34 of the
rotation shaft 3 and the shaft pushing motion is eventually stopped. From
this, the user becomes aware in a reliable manner that the center shaft 4
has been fully pushed.

[0099] A size (diameter) of the small diameter cylinder portion 101 is set
as large as or slightly larger than a size (diameter) of the cylinder
portion 44, so that the cylinder portion 44 does not tilt while the
cylinder portion 44 is inserted into the small diameter cylinder portion
101. Owing to this configuration, the center shaft 4 and further the knob
2 are stabilized when the shaft pushing operation is performed and
tilting motion during the shaft pushing operation is suppressed. As are
shown in FIG. 25A and FIG. 25B, it is preferable to form either a
chamfered portion 44a (or R-shaped portion) at a corner of the cylinder
portion 44 or a chamfered portion 101a (or R-shaped portion) at a corner
of the small diameter cylinder portion 101 of the click plate 10 or to
form the both, because it becomes easier to insert the cylinder portion
44 into the small diameter cylinder portion 101.

[0100] In the operation input device in the related art, the knob is not
stabilized while the shaft is pushed and tilts against the user's
intention during a shaft pushing operation in some cases. On the
contrary, in the device 1, the click plate 10 and the center axis 4 are
fit to each other during a shaft pushing operation. Accordingly, there is
no feeling of instability with the knob 2 during the shaft pushing
operation. Hence, an erroneous operation does not occur by unintended
tilting motion during the shaft pushing operation. It thus becomes
possible to achieve high operation performance unachievable in the
related art.

[0101] A detection of the rotation operation, the shaft pushing operation,
and the tilting operation by the device 1 will now be described with
reference to FIG. 26 through FIG. 29.

[0102] FIG. 26 is a perspective view of the device 1 from which the case
12 and the upper housing 13 are removed. FIG. 27 is a plan view of the
device 1 from which the knob 2, the rotation shaft 3, and the swing shaft
5 are further removed.

[0103]FIG. 28 is a view depicting a calculation routine of a detection
result. FIG. 29 is a view showing a configuration in a case where the
operation input device 1 is installed to an automobile.

[0104] As is shown in FIG. 29, the device 1 is electrically connected to
an air conditioning device 101, an audio device 102, a navigation device
102 and the like of a vehicle 100, and functions as a device that accepts
operation inputs to various in-vehicle devices as specified above from a
passenger of the vehicle 100.

[0105] As are shown in FIG. 26 and FIG. 27, four photo interrupters 14a,
14b, 14c, and 14d are disposed below four flange portions 56 of the swing
shaft 5. In each of the photo interrupters 14a, 14b, 14c, and 14d, a
light emitter portion 140 that outputs light from an LED or the like and
a light receiver portion 141 that is provided with a light receiving
element and receives light emitted from the light emitter portion 140 are
disposed at opposing positions.

[0106] Each flange portion 56 has a hollow interior. Hence, for example,
when the user performs a shaft pushing operation, the flange portions 56
move downward in a parallel direction and the four photo interrupters
14a, 14b, 14c, and 14d are inserted into the respective four flange
portions 56. A shielding wall 56a is formed in a hollow region inside
each flange portion 56. Hence, when the photo interrupters 14a, 14b, 14c,
and 14d are inserted into the respective flange portions 56, each
shielding wall 56a is interposed between the light emitter portion 140
and the light receiver portion 141 and blocks light transmitted from the
light emitter portion 140 to the light receiver portion 141.

[0107] In a state where the photo interrupters 14a, 14b, 14c, and 14d are
present on the outside of the flange portions 56, light emitted from the
light emitter portion 140 is received at the light receiver portion 141.
Upon receipt of light at the light receiver portion 141, the photo
interrupters 14a, 14b, 14c, and 14d each output an OFF signal. When no
light is received at the light receiver portion 141, the photo
interrupters 14a, 14b, 14c, and 14d each output an ON signal.

[0108] As has been described above, the device 1 accepts a tilting
operation in the eight directions D1 through D8 specified in FIG. 27, a
shaft pushing operation, and a turning operation from the user. The four
flange portions 56 of the swing shaft 5 and the four photo interrupters
14a, 14b, 14c, and 14d are disposed in the directions D1, D3, D5, and D7,
respectively.

[0109] The four flange portions 56 are pushed downward by a shaft pushing
operation or a tilting operation by the user and at least one (or all) of
the photo interrupters 14a, 14b, 14c, and 14d is switched ON.
Combinations of an ON state and an OFF state of the photo interrupters
14a, 14b, 14c, and 14d vary depending on which one of the shaft pushing
operation and the tilting operations in the eight directions is
performed.

[0110]FIG. 28 shows a manner in which the combinations vary. More
specifically, when the user performs a shaft pushing operation, the four
flange portions 56 move downward in a parallel direction and all of the
photo interrupters 14a, 14b, 14c, and 14d are switched ON. When the user
performs a tilting operation in the direction D1, the flange portion 56
in the direction D1 alone is pushed downward and the flange portions 56
in the other directions are not pushed downward. Hence, in the case of
the tilting operation in the direction D1, the photo interrupter 14a
alone is switched ON and the other photo interrupters 14b, 14c, and 14d
remain in an OFF state.

[0111] When the user performs a tilting operation in the direction D3, the
flange portion 56 in the direction D3 alone is pushed downward and the
flange portions 56 in the other directions are not pushed downward.
Hence, in the case of the tilting operation in the direction D3, the
photo interrupter 14b alone is switched ON and the other photo
interrupters 14a, 14c, and 14d remain in an OFF state.

[0112] When the user performs a tilting operation in the direction D5, the
flange portion 56 in the direction D5 alone is pushed downward and the
flange portions 56 in the other directions are not pushed downward.
Hence, in the case of the tilting operation in the direction D5, the
photo interrupter 14c alone is switched ON and the other photo
interrupters 14a, 14b, and 14d remain in an OFF state.

[0113] When the user performs a tilting operation in the direction D7, the
flange portion 56 in the direction D7 alone is pushed downward and the
flange portions 56 in the other directions are not pushed downward.
Hence, in the case of the tilting operation in the direction D7, the
photo interrupter 14c alone is switched ON and the other photo
interrupters 14a, 14b, and 14d remain in an OFF state.

[0114] Also, the shapes and the positional relations of the photo
interrupters 14a, 14b, 14c, and 14d and the flange portions 56 are set so
that when the user tilts the knob 2 in the direction D2, D4, D6, or D8,
the photo interrupters on both the left and right sides of the tilting
direction are switched ON.

[0115] According to this configuration, when the user performs a tilting
operation in the direction D2, the flange portions 56 in the directions
D1 and D3 on the both sides are pushed downward and the flange portions
56 in the other directions are not pushed downward. The photo
interrupters 14a and 14b are disposed in the directions D1 and D3,
respectively. Hence, in the case of the tilting operation in the
direction D2, the photo interrupters 14a and 14b are switched ON and the
photo interrupters 14c and 14d remain in an OFF state.

[0116] Likewise, when the user performs a tilting operation in the
direction D4, the flange portions 56 in the directions D3 and D5 on the
both sides are pushed downward and the flange portions 56 in the other
directions are not pushed downward. The photo interrupters 14b and 14c
are disposed in the directions D3 and D5, respectively. Hence, in the
case of the tilting operation in the direction D4, the photo interrupters
14b and 14c are switched ON and the photo interrupters 14a and 14d remain
in an OFF state.

[0117] When the user performs a tilting operation in the direction D6, the
flange portions 56 in the directions D5 and D7 on the both sides are
pushed downward and the flange portions 56 in the other directions are
not pushed downward. The photo interrupters 14c and 14d are disposed in
the directions D5 and D7, respectively. Hence, in the case of the tilting
operation in the direction D6, the photo interrupters 14c and 14d are
switched ON and the photo interrupters 14a and 14b remain in an OFF
state.

[0118] When the user performs a tilting operation in the direction D8, the
flange portions 56 in the directions D7 and D1 on the both sides are
pushed downward and the flange portions 56 in the other directions are
not pushed downward. The photo interrupters 14d and 14a are disposed in
the directions D7 and D1, respectively. Hence, in the case of the tilting
operation in the direction D8, the photo interrupters 14d and 14a are
switched ON and the photo interrupters 14b and 14c remain in an OFF
state.

[0119] With the use of these features, the device 1 detects which one of
the shaft pushing operation and the tilting operations in the eight
directions D1 through D8 was performed on the basis of combinations of ON
and OFF outputs from the photo interrupters 14a, 14b, 14c, and 14d.

[0120] More specifically, as is set forth in FIG. 28, in a case where the
photo interrupter 14a alone is ON and the photo interrupters 14b, 14c,
and 14d are OFF, the device 1 detects that the tilting operation in the
direction D1 was performed. In a case where the photo interrupters 14a
and 14b are ON and the photo interrupters 14c and 14d are OFF, the device
1 detects that the tilting operation in the direction D2 was performed.
In a case where the photo interrupter 14b alone is ON and the photo
interrupters 14a, 14c, and 14d are OFF, the device 1 detects that the
tilting operation in the direction D3 was performed.

[0121] In a case where the photo interrupters 14b and 14c are ON and the
photo interrupters 14a and 14d are OFF, the device 1 detects that the
tilting operation in the direction D4 was performed. In a case where the
photo interrupter 14c alone is ON and the photo interrupters 14a, 14b,
and 14d are OFF, the device 1 detects that the tilting operation in the
direction D5 was performed. In a case where the photo interrupters 14c
and 14d are ON and the photo interrupters 14a and 14b are OFF, the device
1 detects that the tilting operation in the direction D6 was performed.

[0122] In a case where the photo interrupter 14d alone is ON and the photo
interrupters 14a, 14b, and 14c are OFF, the device 1 detects that the
tilting operation in the direction D7 was performed. In a case where the
photo interrupters 14d and 14a are ON and the photo interrupters 14b and
14c are OFF, the device 1 detects that the tilting operation in the
direction D8 was performed. In a case where all of the photo interrupters
14a, 14b, 14c, and 14d are ON, the device detects that the shaft pushing
operation was performed.

[0123] As is shown in FIG. 29, the operation input device 1 (device) is
installed, for example, to the vehicle (automobile) 100. A CPU 95, a RAM
96, and a ROM 97 are provided to the substrate 9 of the device 1. The CPU
95 performs information processing, such as various computations,
relating to the device 1, and particularly detects an operation (which
operation was performed) by the user on the device 1.

[0124] The RAM 96 is a volatile storage portion for a work area of the CPU
95. The ROM 97 is a non-volatile storage portion in which to store
various types of data and programs used for the processing by the CPU 95.
As is shown in FIG. 29, the substrate 9 is electrically connected to the
photo interrupters 14a, 14b, 14c, and 14d and ON and OFF outputs from the
photo interrupters 14a, 14b, 14c, and 14d are obtained by the substrate
9. The determination routine set forth in FIG. 28 is pre-stored in the
ROM 97 in the form of a program. Hence, the CPU 95 determines a tilting
direction and a shaft pushing operation by running this program.

[0125] The device 1 further includes a rotation detection portion 14e and
detects a rotation operation by the user. As is shown in FIG. 26, the
rotation detection portion 14e is of a bar shape protruding upward from a
horizontal surface of the holder 8. A gear (toothed wheel) is formed on a
radially outward end face of the flange potion 34 of the rotation shaft
3. Also, a gear is formed on a side surface of the rotation detection
portion 14e. The both gears are meshed with each other.

[0126] When the knob 2 and the rotation shaft 3 are turned by a turning
operation by the user, the turning motion is transmitted to the rotation
detection portion 14e by these gears. The rotation detection portion 14e
is furnished with a function of detecting a rotating angle. The rotating
angle detected by the rotation detection portion 14e is transmitted to
the substrate 9 and the rotation angle inputted by the user is recognized
by the CPU 95.

[0127] Information on the inputs by the user (which one of the shaft
pushing operation, the tilting operations in the eight directions, and
the turning operation was performed and a rotation angle by the turning
operation) recognized by the CPU 95 as described above is sent to the air
conditioning device 101, the audio device 102, and the navigation device
103 installed to the vehicle 100 and these devices are controlled
according to the inputs.

[0128] In the determination routine set forth in FIG. 28, a condition for
the determinations in the directions D2, D4, D6, and D8 is that two photo
interrupters be switched ON. However, there may be a case where two photo
interrupters are not switched ON simultaneously when the user fails to
perform an operation successfully. The device 1 can solve a problem in
this case by means of software using the program of the determination
routine. More specifically, for example, the device 1 does not make a
determination for a predetermined time (for example, several tens to 100
msec) since one photo interrupter is switched ON and when another photo
interrupter is switched ON within the predetermined time, then the device
1 assumes that these photo interrupters are switched ON simultaneously.

[0129] Also, according to FIG. 28, in a case where the four photo
interrupters are ON, the device 1 determines that a shaft pushing
operation was performed. However, there may be a case where the user
fails to switch ON the four photo interrupters successfully. Hence, it
may be configured in such a manner that the device 1 determines that a
shaft pushing operation was performed in a case where at least three
photo interrupters are ON by the program of the determination routine.

[0130] As has been described, the device 1 of the present disclosure
detects eight tilting directions (and a shaft pushing operation) using
four photo interrupters. Assume that the photo interrupters are changed
to contact-type switches. Then, elasticity of the contact-type switches
provides the user with an operational feeling. Accordingly, the user has
different operational feelings between directions (D1, D3, D5, and D7) in
which switches are provided and directions (D2, D4, D6, and D8) in which
switches are not provided. This configuration is therefore not
preferable. In addition, in order to provide the user with the same
operational feeling in all the eight directions using the contact-type
switches, eight switches are required.

[0131] In contrast, according to the device 1 of the present disclosure,
the photo interrupters are non-contact type detection means and the
function of providing the user with an operational feeling is intensively
furnished to the click plate 10. The device 1 therefore achieves
significant advantages that it becomes possible to provide the user with
the same operational feeling in all the eight directions, and moreover,
it becomes possible to detect the eight tilting directions and a shaft
pushing operation using four (less than eight) photo interrupters.

[0132] It goes without saying that the detection means in the embodiment
above can be changed from photo interrupters to switches or sensors.
There can be achieved advantages that it becomes possible to detect eight
tilting directions and a shaft pushing operation by fewer (four)
detection means in this case, too. The embodiment above has described
tilting operations in eight directions. It should be appreciated,
however, that the number of tilting directions is not limited to eight in
the present disclosure. The tilting directions can be set to an even
number, such as 10, 6, 4, and 2 or an odd number, such as 3, 5, and 7.
The photo interrupters can be disposed at positions and in the number
matching the number of the tilting directions. Also, the guide grooves of
the click plate and the ribs 36 (first concavo-convex portions) of the
rotation shaft 3 are changed to match the tilting directions. As many
groove portions 132 (second concavo-convex portions) as a multiple of the
number of the ribs 36 (first concavo-convex portions) can be formed in
the upper housing 13.

[0133] FIG. 30 shows a change from the click plate 10 to a click plate
10'. The click plate 10 is provided with the guide portion 104 that
guides a tilting operation by the user to eight directions. The click
plate 10' is provided with a guide portion 104' that guides a tilting
operation by the user to four directions. The four directions by the
guide portion 104' are four directions adjacent ones of which are
orthogonal to each other. As in the guide portion 104, a ring-like convex
portion and linear convex portions are formed therein.

[0134] As has been described, in the device 1, the function of guiding the
oscillation plunger 40 in a tilting direction is intensively furnished to
the click plate 10. The click plate 10 is pinched between the cover 11
and the substrate 9. Existing fixing methods, such as screwing and
press-fitting, can be used arbitrarily as a fixing method of the click
plate 10 to the substrate 9 and the cover 11. Hence, it is easy to change
the click plate 10 (for example, to the click plate 10') in the device 1.
Consequently, the number of tilting directions can be changed easily in
the device 1.

[0135] In a case where the click plate 10 is changed to the click plate
10', the tilting operation is guided to the direction D1, D3, D5, or D7
described above. Whereas tilting motion in the direction D2, D4, D6, or
D8 becomes quite difficult because of the shape of the guide portion
104'. Accordingly, even when the determination program for eight
directions set forth in FIG. 28 is used in a case where the click plate
10' is used, the directions D2, D4, D6, and D8 are simply not detected,
and there arises no problem.

[0136] Hence, even when the click plate 10 is changed to the click plate
10', the determination program set forth in FIG. 28 can be used without
any change. In other words, according to the device 1 of the present
disclosure, once the determination program for eight tilting directions
is installed therein, it becomes possible to change eight tilting
directions to four tilting directions by merely changing the click plate
10 to the click plate 10'. For the same reason, for example, a change to
two directions can be addressed by merely changing the click plates. It
thus becomes possible to achieve an inexpensive derived product set with
different operation directions from the device 1 of the present
disclosure.

[0137] The present disclosure includes the following aspects.

[0138] According to an aspect of the present disclosure, an operation
input device includes: an operation body having a handle portion, the
handle portion being configured to be held by a user and having a virtual
operation axis line, and the operation body being configured to tilt
together with the handle portion around a predetermined rotation center
point on the operation axis line in a case where the user holds the
handle portion and tilts the operation axis line of the handle portion; a
tip end portion disposed at an end of the operation body in a direction
of the operation axis line, the tip end portion being pushed in a
direction to move apart from the handle portion along the direction of
the operation axis line; an abutment portion having an abutment surface,
the tip end portion moving and abutting on the abutment surface during a
tilting operation of the operation body; and a plurality of first
protrusion portions. When the tip end portion moves in a predetermined
tilting direction during the tilting operation of the operation body, the
tip end portion abuts on the abutment surface and moves along a movement
path. The first protrusion portion is disposed on a side of the movement
path so that the first protrusion portion guides the tip end portion in
the predetermined tilting direction.

[0139] The operation input device above is configured in such a manner
that the tip end portion of the operation body that tilts in association
with a tilting operation by the user is pushed and abuts on the abutment
surface, and the protrusion portion is provided lateral to the movement
path corresponding to a predetermined tilting direction on the abutment
surface. Accordingly, the tilting direction of the operation body is
guided to the predetermined tilting direction by the protrusion portion.
Hence, with a configuration as simple as forming the protrusion portion
on the abutment surface, it becomes possible to achieve an operation
input device that provides a distinct operation feeling in response to a
tilting operation and lowers a possibility of an input of a wrong tilting
operation.

[0140] Alternatively, the operation input device may further include: a
second protrusion portion. The second protrusion portion surrounds a
position of the abutment surface, on which the tip end portion abuts,
under a condition that the tilting operation of the operation body is not
performed. The second protrusion portion is located on a boundary between
the position of the abutment surface, on which the tip end portion abuts
under a condition that the tilting operation of the operation body is not
performed and a position of the abutment surface, on which the tip end
portion abuts under a condition that the tilting operation of the
operation body is performed. In this case, the protrusion portion is
formed on the abutment surface on the periphery of the abutting position
when the operation body is not tilting. Hence, the user can have a
feeling that the tip end portion of the operation body surmounts the
protrusion portion. The user can therefore recognize in a reliable manner
that the operation body starts to tilt or further the operation body is
not tilting. It thus becomes possible to provide the user with a reliable
operational feeling as to whether the operation body is tilting or not.

[0141] Alternatively, tilting directions of the operation body may be set
equally in a circumferential direction of the operation axis line around
the operation axis line under a condition that the tilting operation of
the operation body is not performed. The plurality of first protrusion
portions are disposed in a radial manner from a center of the abutment
surface. In this case, because the protrusion portions each guiding the
tip end portion of the operation body into a predetermined tilting
direction are formed in a radial fashion in the circumferential direction
from the center of the abutment surface, the tip end portion of the
operation body is guided in a reliable manner to the path between the
protrusion portions in a radial fashion. Hence, it becomes possible to
achieve an operation input device that guides the tip end portion of the
operation body in a reliable manner in any one of the tilting directions
set equally in the circumferential direction.

[0142] Alternatively, the movement path may include a plurality of routes.
The plurality of routes are disposed to be adjacent to each other. The
first protrusion portion is disposed between two adjacent routes. The
first protrusion portion provides a single convex portion, which is
available for two routes. In this case, a single protrusion portion is
used for those between the adjacent tilting directions. Hence, the tip
end of the operation is guided in a predetermined tilting direction in a
reliable manner with a simple shape.

[0143] Alternatively, the first protrusion portion may be set to have a
height, which is low enough for the tip end portion to shift from one of
the adjacent routes to the other. In this case, when the user wishes to
shift the tilting direction to an adjacent tilting direction, the use is
allowed to shift to this adjacent tilting direction. Hence, the operation
input body not only has flexibility of allowing the user to change
tilting directions in the middle of an operation, but also provides the
user in a reliable manner with a feeling of having shifted to the
adjacent tilting direction.

[0144] While the present disclosure has been described with reference to
embodiments thereof, it is to be understood that the disclosure is not
limited to the embodiments and constructions. The present disclosure is
intended to cover various modification and equivalent arrangements. In
addition, while the various combinations and configurations, other
combinations and configurations, including more, less or only a single
element, are also within the spirit and scope of the present disclosure.